Valve lifter



'Dec. 16, 1930. J MCCREADY 1,785,040

' VALVE LIFTER Filed Jan. 15, 1930 2 Sheets-Sheet 1 James Pmcrwaz INVEN R ATTORNEY J. P. M CREADY VALVE LIFTER Filed Janv 15, 1930 4| 1 I lllllll 2 SheetsSheet 2 lower handle and 2 the upper handle. Both Patented Dec. 16, 1930 "NITED STATES A JAMES nmcczannmaor BERLIN, :NEW HAMPSHIRE vALvE LIFTER Application filed January 15, 1930. Serial No. 421,026.

1 This invention relates to a spring valve lifter or compressor, the general object of the invention being to provide a strong, 'efiicient tool having double jaws, with means where- 5 by the parts are automatically locked in any position when under the pressure of a valve spring, thus leaving the operators hands free of the ends of the slots 4 so that the upper to extract the pin or catch in thevalve stem, the tool providing a strong, accurate check,

- 19 allowing springs to be compressedeasily and distance measured more accuratelythan can be performed by the forms of spring lifters using a'spring for adjustment. 7

Thejalws are so constructed that in com- .15 pressing th valve springs, they always re- 'Inain on aneven angle, no matter to What height they are compressed, and the'weight of the-springs acts as a lock for the jaws.

This invention also consists in certain other 20 features of construction and in the combination and arrangement of the several parts, to

" be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

erencewill be had to the accompanying drawings wherein like characters denote. like or corresponding parts throughout the several views, and in which 7 1 Figure 1-isan elevation showing the device in use. y t

Figure 2is a top plan view of the device. Figure 3 is an elevation showing the parts in aposition to compress a spring.

Figure 4 is a section on line 14 of Fig ure 1. I

Figure 5 is a detail view of one of the jaws.- Figure 6 is a view of anotherform of jaw.-

In these views, the numeral 1 indicates the of these handles are formed of metal strips bent into open loop shape, with the inwardly extending lips 3 on the ends of the lower handle providing rests for engaging a part of the valve assembly. The ends of the limbs of the upper handle extend downwardly and forwardly and are formed with the slots 4.- I, These limbs are close enough together to pass between the limbs of the member 1. An up- In describing .theinvention in detail, ref- Figure 7 is a view ofanother form of jaw.

right 5 is fastened to each limb of the lower I 'handle 1 an appreciable distance from the end of the limb, each uprightbeing set.a little beyond right angles to the lower handle and a-piv'ot bolt 6 passes through the upper-i ends of the uprights and through'the limbs of theupper handle a slight distance in rear the two parts 5. are tapered and formed with the inwardly extending lips'5, each lip have- 5 mg an upright part at'its rear end. i

Each part 5 is formed with a depending part 7 at its rear which has a slot 8 therein.

A roller 11 passes through theslots4 in the handle 2 andthrough the slots '81 111 parts 7. A disk 12 is connected with each end of the roller, one disk being threadedto the end of the roller. These disks engage the outer faces 'of the jaw parts and serve to guide'the roller as it Works back and fort-h so that the roller is always held at right angles to the handles and prevents any chance of the roller jamming or becoming caught. As the roller passes through the slots 8, the jaw member is raised and lowereda 39 by the roller as the upper handle 2 is raised and lowered and said roller acts as a lock to hold the jaw member in position by the pressed. A rod 9 passes through holes in the j parts 5 and i a spring 10 is arranged on the rod and tends to press the parts 5 apart and prevents the aw parts from tilting when the device is turnedupside down. 511

As will be understood, the upper handle --is raised to the position it occupies in Figure 1 to lower the jaw member and then the parts are placedundera spring. The up per handle is then lowered and as this is be-T 95 .ingdone, the roller will raise the jaw member and thus compress the spring. By placing the ends of the roller in the slots, the roller will permit the jaw member to move to varying degrees and will lock the jaw, 109

' readily pass under the springs.

member in its final position when the handle 2 is in adjusted position.

The aw members shown in Figures 3 and 5 are designed for use with the ordinary type of L type motors and when the device is to be used on the valves of continental motors of the L type, a jaw member, formed of the jaw, parts 11 shown in Figure 6, is substituted for the other jaw member. This jaw part has its lip 12 formed with front and rear projections 13.

In order to substitute one jaw member for another the bolt 6 and the roller 7 are removed by removing the nuts from these.

members and then the j aw member is removed and the other jaw member put in its place, after which the bolt 6 and the roller 7 are replaced to hold the second jaw member in position. a

Figure 7 shows another form ofj aw member, which has a U-shaped plate 14 connected with its jaw parts. The rear end of the U-shaped plate has a lip 15 formed thereon. The front ends of this plate and the front ends of the lips of the other forms are beveled, as shown, so they can The jaw member is used with other forms of L type motors.

As before stated, this device forms an efficient tool for the compression of valve springs, and the parts are held. in adjusted position with the spring lifted by the arrangement of the roller and slots so that it is not necessary to hold the tool, after it has been adjusted to lift the spring. The spring acts as a lock for the jaws and the jaws are so constructed as to always remain on an even angle.

It is thought tion that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of" the several parts, provided that such changes fall within the scope of the appended claims.

hat I claim is l. A device of the class described comprising upper and lower handles, an upright fastened to the lower handle intermediate its ends and to which the upper handle is pivoted an appreciable distance from one end, this end of the upper handle having slots therein, a roller having its ends passing through the slots, a jaw member pivoted to the uprights and having a slot therein through which the roller passes.

2. A device of the class described comprising upper and lowerarms, each formed of a strip of material bent into loop shape, uprights connected with the limbs of the lower arm intermediate the ends thereof, a pin passing through the upper ends of the uprights and through the limbs of the upper handle from the foregoing descripan appreciable distance from the extremities of the limbs, said extremities having slots therein, a roller having its ends passing through the slots, washers on the ends of the rollers, a jaw member composed of two members pivoted to the upper ends of the uprights, the free ends of said members having spring engaging parts thereon, said members being slotted with the roller passing through the slots.

3. A device of the class described compriingupper and lower arms, each formed of a strip of material bent into loop shape, uprightsconnected with the limbs of the lower arm intermediate the ends thereof, a pin passing through the upper ends of the uprights and through the limbs of the upper handle an appreciable distance from the extremities of the limbs, said extremities having slots therein, a roller having its ends passing through the slots, washers on the ends of the rollers, a jaw member composed of two members pivoted to the upper ends of the uprights, the free ends of said members having spring engaging parts thereon and said members being slotted to receive the roller and means whereby other j a'w members; may be substituted for the first member.-

4. A device of the class described comprising upper and lower arms, each formed .of a strip of material. bent into loop shape, uprights connected with the limbs of the lower arm intermediate the ends thereof, a pin passing through the upper ends of the uprights and through'the' limbs of the upper handle an appreciable distance from theeX- tremities of the limbs, said extremities having slots therein, a roller having its ends passing through the slots, washers on the ends of the rollers, a jaw member composed of two members pivoted to the upper ends'of the uprights, the free ends of said members having springengaging parts thereon, said members being slotted with the roller passing through the slots and spring means for frictionally holding the jaw member against free movement.

In testimony whereof I affix my signature.

JAMES P. MGCREADY. 

